Quick plug structure and plug

Abstract

The application relates to a quick plug-in structure and a plug, which comprises a plug and a socket, the plug shell has a pin mounting hole and a pin contact, the socket shell has a socket mounting hole and a socket; the pin contact comprises a front-end pin capable of axially reciprocating relative to the plug shell, the tail of the front-end pin is further connected with an elastic member; the front-end pin is further provided with a moving part capable of reciprocating along the radial direction of the front-end pin; when the socket is combined, the end face of the socket mounting hole stops and limits the moving part, and the elastic member is compressed; when the moving part is radially extruded and enters the release groove on the side wall of the socket mounting hole, and the front-end pin is axially moved and quickly combined under the pushing of the elastic member; when the socket is separated, the front end of the release groove stops and limits the moving part, the elastic member is stretched, the sliding part keeps contact with the socket; the moving part is separated from the release groove under the radial extrusion, and the front-end pin is quickly separated from the socket. The application shortens the plug-in time and weakens the burning influence of the electric arc.

Description

Technical Field

[0001] This invention belongs to the field of connector technology, and specifically relates to a quick-plug structure. Background Technology

[0002] Connectors are widely used in many industries, and some connectors require hot-plugging. During hot-plugging, arcing often occurs at the tips of the conductive terminals, causing ablation of the terminal material. Over time, this affects the reliability of the connector contact. Existing technologies often employ protective measures to avoid these problems. Common methods include using arc-extinguishing devices, such as airflow arc-extinguishing, magnetic arc-extinguishing, or vacuum arc-extinguishing devices, to lengthen and cool the arc, thus reducing its ablation effect on the terminals.

[0003] However, reducing the burning effect of electric arc on terminals by setting up arc extinguishing devices always requires sufficient space on the connecting device to arrange the corresponding structural parts. This method is not applicable in some narrow spaces and also increases the complexity of the internal layout of the connector. Summary of the Invention

[0004] To address the aforementioned problems, this invention provides a novel quick-plug structure that reduces arc burning time through rapid plugging and unplugging, thereby mitigating the burning effect of the arc on the terminals.

[0005] The objective of this invention and the technical problem it solves are achieved through the following technical solutions. Based on the present invention...

[0006] A quick-plug structure includes a plug and a socket that interlock at their front ends. The plug housing has at least one pin mounting hole for assembling a pin contact, and the socket housing has at least one socket mounting hole for assembling a socket. The front end of the pin mounting hole has a cavity for the socket mounting hole to enter. The pin contact includes a front pin capable of axial reciprocating relative to the plug housing, and the tail end of the front pin is connected to an elastic element. The front pin also has a moving component capable of radial reciprocating. When the plug and socket are plugged in, the end face of the socket mounting hole blocks and limits the moving component, compressing the elastic element. When the plug and socket are engaged, the moving component is stopped and limited, compressing the elastic element. After being radially pressed by the plug housing and / or the front end of the socket mounting hole, the moving part enters the release groove on the side wall of the socket mounting hole and moves axially with the front pin under the push of the elastic element, realizing the rapid insertion of the front pin and the socket; when the plug and socket are separated, the front end of the release groove stops and limits the moving part, and the elastic element is stretched, at which time the front pin and the socket remain in contact; after being radially pressed by the plug housing and / or the side wall of the release groove, the moving part disengages from the release groove, and the front pin is quickly separated from the socket under the pull of the elastic element; an electric arc will be generated between the front pin and the socket only when the moving part is in the release groove.

[0007] The objectives of this invention and the technical problems it addresses can be further achieved by the following technical measures.

[0008] In the aforementioned quick-plug structure, the front end of the plug mounting hole is provided with a first inclined surface, which is used to stop and limit the moving part so that the elastic element is compressed and the moving part is guided into the release groove; the front side wall of the release groove is provided with a second inclined surface, which is used to stop and limit the moving part so that the elastic element is stretched and the moving part is guided out of the release groove.

[0009] In the aforementioned quick-plug structure, the upper end face of the moving component protrudes from the outer peripheral surface of the insertion hole, and the insertion hole is also provided with a clearance groove for avoiding the moving component. When the compression of the elastic element reaches a set value, the first guide surface on the rear wall of the clearance groove compresses the moving component downward, causing it to enter the release groove along the first inclined surface at the lower front end of the insertion hole. When the stretch of the elastic element reaches a set value, the second guide surface on the front wall of the clearance groove compresses the moving component, causing it to disengage from the release groove along the second inclined surface at the lower front end of the release groove.

[0010] In the aforementioned quick-plug structure, the sliding part is a front-end pin, which includes a pin body and a high-temperature resistant contact fixed to the front end of the pin body. When the moving part is stopped and limited by the front end of the release groove, the front-end pin contacts the socket through the high-temperature resistant contact; when the plug and socket are plugged in, the front-end pin contacts the socket through the pin body.

[0011] In the aforementioned quick-plug structure, the front end of the socket is provided with an elastic structure, which achieves reliable contact with the front end pin through the contact protrusion inside the elastic structure.

[0012] In the aforementioned quick-plug structure, the front end of the high-temperature resistant contact is also fixed with a non-conductive contact for isolating electric arc.

[0013] The aforementioned quick-plug structure includes a fixing part that is fixed in the pin mounting hole and a tail terminal that is fixed at the rear end of the fixing part. The fixing part slides in contact with the front pin, and the elastic element is located between the tail terminal and the front pin.

[0014] In the aforementioned quick-plug structure, the connecting part is a cylindrical structure that fits onto the front-end pin, and slides in contact with the front-end pin through the small-diameter section at the front end. The protrusion on the outer periphery of the tail of the front-end pin is located in the large-diameter section at the rear end of the connecting part and can cooperate with the stepped surface formed at the diameter change of the connecting part for limiting.

[0015] In the aforementioned quick-plug structure, the moving component includes a guide mounting groove and a slider slidably mounted in the guide mounting groove. A spring provides the slider with power to move away from the bottom of the guide mounting groove, and a roller is provided at the upper end of the slider for rotation.

[0016] In the aforementioned quick-plug structure, the roller is rotatably mounted in a slot at the upper end of the slider via a fixed shaft, and partially extends out of the slot; the upper surface of the slider is an arc surface that is low at both ends and high in the middle.

[0017] The aforementioned quick-plug structure also includes an engagement locking structure between the plug housing and the socket housing.

[0018] Compared with existing technologies, this invention has significant advantages and beneficial effects. Through the above technical solution, this invention achieves considerable technological advancement and practicality, and has broad industrial application value, possessing at least the following advantages:

[0019] This invention enables rapid insertion and separation of the socket and pin by storing energy in an elastic element, which can effectively shorten the time required for the generation of an electric arc between them, thereby reducing the burning effect. No other arc-extinguishing device is required, thus meeting the requirements of miniaturization.

[0020] In addition, the front end of the pin of the present invention is provided with a high-temperature resistant contact for bearing the arc burning, and the high-temperature resistant contact is no longer in contact with the socket after the pin is inserted into place, thus satisfying the requirements of high arc burning capacity and good signal transmission performance of the pin.

[0021] Finally, the front end of the high-temperature resistant contact of the present invention is also provided with a non-conductive contact for isolating the electric arc, further reducing the influence of the gap arc. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the socket structure of the quick-plug structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the plug structure of the quick-plug structure of the present invention;

[0024] Figure 3 This is a schematic diagram of the first insertion state of the quick insertion / removal structure of the present invention;

[0025] Figure 4 This is a schematic diagram of the second insertion state of the quick insertion / removal structure of the present invention;

[0026] Figure 5 This is a schematic diagram of the third insertion state of the quick insertion / removal structure of the present invention;

[0027] Figure 6 This is a schematic diagram showing the fully engaged state of the quick-plug structure of the present invention.

[0028] Figure 7 This is a schematic diagram of the first separation state of the quick-plug structure of the present invention;

[0029] Figure 8 This is a schematic diagram of the second separation state of the quick-plug structure of the present invention;

[0030] Figure 9 This is a schematic diagram of the third separation state of the quick-plug structure of the present invention;

[0031] Figure 10 This is a schematic diagram showing the quick-plug structure of the present invention in a fully separated state;

[0032] Figure 11 This is a schematic diagram of the pins of the quick-plug structure of the present invention;

[0033] Figure 12 for Figure 10 A magnified view of a portion of the image.

[0034] [Explanation of Key Component Symbols]

[0035] 1: Socket

[0036] 101: Socket housing

[0037] 102: Socket

[0038] 103: Socket mounting hole

[0039] 104: Contact cantilever

[0040] 105: Contact protrusion

[0041] 106: Ceramic tube

[0042] 107: Release slot

[0043] 108: First inclined plane

[0044] 109: Second slope

[0045] 110: Clamping component

[0046] 2: Plug

[0047] 201: Plug housing

[0048] 202: Front-end pin

[0049] 203: Connecting part

[0050] 204: Tail terminal

[0051] 205: Elastic component

[0052] 206: Non-conductive contact

[0053] 207: High-temperature resistant contact

[0054] 208: First guiding surface

[0055] 209: Second guiding surface

[0056] 210: Moving parts

[0057] 211: Pin mounting hole

[0058] 212: Clearance slot Detailed Implementation

[0059] To further illustrate the technical means and effects adopted by the present invention to achieve the intended purpose, the following detailed description of the specific implementation, structure, features and effects of the quick-plug structure proposed according to the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0060] Please see Figure 1-12 The diagram shows the structure of each part of the quick-plug structure of the present invention. The quick-plug structure includes a socket 1 and a plug 2 that are plugged into each other at the front end. The socket 1 includes a socket housing 101 made of insulating material. The socket housing 101 has at least one axially extending insertion hole 103 inside, and an insertion hole 102 is fixed inside the insertion hole 103.

[0061] The plug 2 includes a plug housing 201 and at least one axially extending pin mounting hole 211. The pin mounting hole 211 is provided with a pin contact, which includes a tail terminal 204, a front pin 202, and a connecting part 203 that enables signal conduction between the tail terminal 204 and the front pin 202. The connecting part 203 is fixed in the pin mounting hole 211 and is fixed to the tail terminal. The rear end of the front pin 202 is in sliding contact with the connecting part 203, allowing the front pin 202 to slide axially relative to the connecting part 203 within the pin mounting hole 211.

[0062] An elastic element 205 is also provided between the front end pin 202 and the rear end terminal 204. This elastic element 205 can elastically deform to assist the axial sliding of the front end pin 202 when it slides axially. In this embodiment of the invention, the elastic element 205 is a spring, but it is not limited to this.

[0063] The front-end pin 202 is provided with at least one radially movable component 210, which at least partially extends out of the outer periphery of the front-end pin 202. The front end of the pin mounting hole 211 has a cavity for insertion into the socket end mounting hole 103. When the plug 2 and the socket 1 are plugged in, the movable component 210 can be stopped and limited by the front end face of the mounting hole 103 on the socket 1, thereby causing the front-end pin 202 to move axially backward, while the elastic element 205 is compressed and stores force.

[0064] The front wall of the insertion hole 103 is provided with a release groove 107 for the moving part 210 to enter and be released freely. The lower part of the front wall of the release groove 107 is provided with a second inclined surface 109, and the lower part of the front surface of the insertion hole 103 is provided with a first inclined surface 108. The first inclined surface 108 is used to guide the moving part 210 into the release groove 107, and the second inclined surface 109 is used to guide the moving part 210 out of the release groove 107.

[0065] In this embodiment of the invention, the upper surface of the moving component 210 is higher than the outer peripheral surface of the insertion hole 103. At this time, the release groove 107 is a through groove. The insertion hole 211 is also provided with a clearance groove 212 for the moving component 210 to pass freely. The lower part of the walls on both axial sides of the clearance groove 212 is provided with inclined surfaces. The inclined surface located at the lower part of the front wall of the clearance groove 212 is the second guide surface 209, and the inclined surface located at the lower part of the rear wall of the clearance hole 212 is the first guide surface 208. When the moving component 210 engages with the front end face of the insertion hole 103, the front insertion pin 202 moves axially backward into the clearance groove 210. At the rear side wall, under the action of the first guide surface 208, the moving part 210 is radially compressed, and then quickly enters the release groove 107 under the guidance of the first inclined surface 108 at the front end of the insertion hole 103, and is released in the release groove 107. That is, the upper end of the moving part 210 extends out of the release groove 107. At this time, the front end pin 202 initially contacts the insertion hole 102. Under the push of the compressed elastic element 205, the front end pin 202 quickly advances and inserts into the insertion hole 102. The axial extension length of the release groove 107 meets the insertion length requirement of the front end pin 202 and the insertion hole 102. That is, during the entire process of the front end pin 202 and the insertion hole 102 being inserted, the moving part 210 can move freely along the axial direction of the release groove 107.

[0066] The lower part of the front wall of the release groove 107 is also provided with a second inclined surface 109 for guiding the moving part 210 out of the release groove 107 when the connector is separated. When the front pin is stopped and limited by the elastic member 205, the front pin 202 and the socket 102 are still in the inserted state. Pulling the plug housing 201 causes the elastic member 205 to be stretched and accumulate elastic force. When the plug housing 201 moves to the second guide surface 209 at the lower part of the front end of the relief groove 212 and reaches the moving part 210 and applies a downward force to the moving part 210, the moving part 210 retracts radially inward and quickly disengages from the release groove 107 under the guidance of the second inclined surface 109, and the front pin 202 and the socket 102 are quickly separated.

[0067] In this invention, an electric arc is generated between the front end pin 202 and the socket 102 only when the moving part 210 is located in the release groove 107. When the moving part 210 does not enter the release groove 107, there is insufficient time to generate an electric arc between the front end pin 202 and the socket 102.

[0068] The first inclined surface 108 is a gradually descending inclined surface from front to back, and the second inclined surface 109 is a gradually ascending inclined surface from front to back. The first guide surface 208 is a gradually descending inclined surface from front to back, and the second guide surface 209 is a gradually ascending inclined surface from front to back.

[0069] In another embodiment of the present invention, the upper end face of the moving part 210 does not extend beyond the outer peripheral surface of the insertion mounting hole 103. In this case, the release groove 107 can be a blind groove, and the design of the avoidance groove in the insertion mounting hole 211 can be eliminated, but the design of the first guide surface 208 can still be retained to assist the first inclined surface 108 in radially pressing the moving part 210. At this time, the surface at the front end of the insertion mounting hole 103 that stops and cooperates with the moving part 210 is an inclined surface. Preferably, the first inclined surface 108 extends to the outer peripheral surface of the insertion mounting hole 103. When the moving part 210 enters the release groove 107, the surface on the front wall of the release groove 107 that contacts the moving part 210 is a second inclined surface 109 that can guide the moving part 210 out of the release groove 107. Preferably, the front wall of the release groove 107 is the second inclined surface 109.

[0070] In this embodiment of the invention, the front-end pin 202 includes a pin body and a high-temperature resistant contact 207 fixed at the front end of the pin body. The high-temperature resistant contact 207 can achieve initial contact with the socket when the moving part 210 slides into the release groove 107, or achieve separation from the socket 102 when the moving part 210 slides out of the release groove 107. The part of the front-end pin 202 that is prone to generating electric arc during insertion and separation is the high-temperature resistant contact 207. The high-temperature resistant contact 207 can reduce the impact of electric arc erosion on the contact part between the front-end pin 202 and the socket.

[0071] The socket 102 achieves reliable contact with the plug end through its elastic structure at its front end. Specifically, the front end of the socket 102 is provided with a plurality of circumferentially spaced and axially extended elastic contact cantilever arms 104. The front end of each contact cantilever arm 104 protrudes inward to form a contact protrusion 105. When the front pin 202 is inserted, the contact cantilever arm 104 achieves reliable contact with the outer periphery of the front pin 202 through the contact protrusion 105 on its inner side at its front end. The diameter of the circumference of the contact protrusion is smaller than the outer diameter of the front pin 202, thereby ensuring reliable elastic contact between the socket and the pin. In this embodiment, the socket 102 is fixed in the socket mounting hole by a clamping member 110. A flange is provided on the outer periphery of the tail of the socket 102. The clamping member 102 presses the flange against the stepped surface in the socket mounting hole. Preferably, the clamping member 102 is threaded in the socket mounting hole, but it is not limited to this.

[0072] When the connector is fully engaged, the contact protrusion 105 at the front end of the socket 102 makes contact with the outer periphery of the pin body of the front pin 202. That is, through the design of the engagement distance, the electric arc on the front pin occurs at the high-temperature resistant contact 207 at the front end, while the signal transmission function is realized through the pin body, so as to ensure both the service life of the pin and the signal transmission performance.

[0073] To enhance the heat dissipation effect of the front pin 202 when the connector is plugged in, a ceramic tube 106 for rapid heat conduction and heat dissipation is also fixed in the socket mounting hole 103. The ceramic tube 106 is fixed to the front end of the socket 102.

[0074] In this embodiment of the invention, a non-conductive contact 206 is also fixed at the front end of the high-temperature resistant contact 207. The non-conductive contact 206 not only enables the anti-finger contact function of the plug end, but also isolates the electric arc and reduces the erosion effect of the electric arc.

[0075] In this embodiment of the invention, the rear end of the front pin 202 of the pin contact member is a hollow cylindrical structure. One end of the elastic member 205 is fixed inside the cylindrical structure, and the other end extends out of the cylindrical structure and is fixed to the tail terminal 204. Preferably, the elastic member is connected and fixed to the front pin 202 and the tail terminal 204 by screws.

[0076] When the elastic element 205 is in a free state, there is a first stroke space 213 between the tail of the front pin 202 and the tail terminal 204 to meet the requirement of the elastic element 205 retracting and compressing. When the first stroke space is fully occupied, that is, when the tail of the front pin 202 contacts the tail terminal 204, the front pin 202 can be pushed forward by pushing the plug housing so that the front pin can be inserted into place.

[0077] The connecting part 203 is a cylindrical structure, fixed to the rear end of the pin mounting hole 211, and slides with the outer periphery of the front pin 202 through the small-diameter section 216 that contracts at its front end. A stepped surface 215 is formed between the small-diameter section 216 at the front end and the large-diameter section 217 at the rear end of the connecting part 203. In this embodiment, a boss 214 is also provided on the outer periphery of the tail of the front pin 202. When the elastic member 205 is in a free state, a second stroke space 218 is formed between the boss 214 and the stepped surface 215. The second stroke space 218 can meet the needs of the elastic member for storing force during tensile deformation. Furthermore, the boss 214 and the stepped surface 215 can also force the front pin 202 to be pulled out when the elastic member 205 is stretched to its limit, through the cooperation of the front end face of the boss 214 and the stepped surface 215.

[0078] In this embodiment of the invention, the connecting part 203 is provided with an annular boss on its outer periphery. The annular boss is pressed and fixed on the stepped surface in the pin mounting hole by a clamping nut, thereby fixing the connecting part.

[0079] The pin contact of the present invention, through the setting of the connecting part 203, ensures that the connection between the front pin 202 and the tail terminal 204 is always maintained when the front pin 202 slides axially relative to the plug housing 201, so as to ensure that the current transmission is not interrupted and to achieve continuous current transmission through the front pin, the connecting part and the tail terminal.

[0080] In this embodiment of the invention, the moving component 210 includes a guide mounting groove 2101, which is fixed in a groove on the moving component 210. A slider 2103 is slidably disposed in the guide mounting groove 2101. A spring 2102 is also provided between the slider 2103 and the guide mounting groove 2101 to provide power to the slider 2103 away from the bottom of the guide mounting groove 2101. Preferably, in order to guide the spring 2102 when it is compressed or stretched and to prevent it from swaying, a guide post 21011 is provided at the bottom of the guide mounting groove 2101. The lower part of the slider 2103 is a cylindrical structure with an open lower end that allows the spring 2102 to enter. The cylindrical structure and the guide post 21011 cooperate to guide the spring 2102 when it undergoes elastic deformation. Preferably, the slider 2103 achieves sliding guidance with the guide mounting groove 2101 through the outward flange at its lower end, so as to reduce the contact area between the two, thereby reducing the friction and making the movement of the moving part 210 smoother.

[0081] To reduce resistance when entering and exiting the release groove 107, the surface of the upper end of the moving component 210 that contacts the insertion hole 103 is a smooth arc-shaped surface. In this embodiment of the invention, the surface of the moving component 210 that contacts the insertion hole 103 is the outer circumferential surface of the roller 2104 located on the upper part of the slider 2103. The roller 2104 is rotatably fixed in the through groove on the upper part of the slider 2103 by a fixed shaft, and the upper end surface of the roller 2104 is higher than the upper end surface of the slider 2103. To prevent interference caused by contact between the slider 2103 and the wall of the insertion hole 103, which would affect the sliding of the moving component 210, the upper end surface of the slider 2103 is a smooth arc-shaped surface that is higher in the middle and lower at both ends, and the fixed shaft of the roller 2104 is fixed in the middle position of the slider.

[0082] The insertion and extraction process of the quick-plug structure of this invention is described in detail below:

[0083] When socket 1 and plug 2 are plugged in, plug 2 on the right side moves to the left. When it moves to... Figure 3 In this state, the moving part 210 on the front pin 202 of the plug is restricted by the front end face of the socket mounting hole 103 and cannot continue to move to the left. At this time, the distance between the head of the front pin 202 and the socket 102 is greater than the maximum distance at which the two can generate an electric arc, thus avoiding the generation of an electric arc between the plug and the socket.

[0084] Continue pushing the housing of plug 2 to the left. At this time, the moving part 210 on the front pin 202 is restricted and cannot follow the leftward movement. The elastic element 205 is compressed and deformed, storing elastic potential energy. When the plug housing moves to... Figure 4 In this state, the inclined surface feature (first guide surface 208) inside the plug housing compresses the moving part 210 downward and places the moving part 210 below the first inclined surface of the socket housing end face (the front end face of the socket mounting hole 103). At this time, the socket housing end face cannot restrict the moving part from moving to the left. Under the action of the elastic potential energy of the elastic element 205, the moving part 210 is in a tendency to slide quickly to the left.

[0085] Please see Figure 5 Under the action of the elastic element 205, the moving part 210 slides to the left and is introduced into the release groove 107 along the first inclined surface 108. At this time, the conductive contact part of the front end pin 202 contacts the socket hole to achieve conduction and complete the quick insertion action.

[0086] The front pin 202 continues to insert rapidly under the action of the elastic element 205, until it moves to... Figure 6 When in position, the plug and socket are fully engaged. During this process, the moving part 210 moves freely along the release groove 107 without constraint. When the plug housing and socket housing are locked together by the locking structure, the first guide surface 208 in the pin mounting hole 211 presses against the moving part 210, but is not limited to this.

[0087] When the plug and socket are separated, the plug housing 2 moves to the right. During this process, the elastic element 205 is stretched, causing the front pin 202 to move to the right. When it moves to... Figure 7 In the state, the moving part 210 is stopped and limited by the front wall of the release groove 107, and the front pin still remains in contact with the socket.

[0088] The plug housing continues to move to the right, while the front pin 202 remains stationary. When the plug housing moves to... Figure 8 When the pin mounting hole 211 is in the correct position, the second guide surface 209 (sloping surface feature) inside the pin mounting hole 211 is located above the moving part 210 and compresses the moving part 210 downward, so that the moving part 210 is in a state that can slide along the second slope 109 at the front end of the release groove 107. At this time, the elastic element is stretched to the limit and has a tendency to contract, storing elastic potential energy.

[0089] The moving part 210 on the front insertion pin 202 slides along the second inclined surface 109 to disengage from the insertion hole 103, and moves rapidly with the front insertion pin under the pull of the elastic element 205. Figure 9 Positioning allows for rapid separation of the front-end pins and sockets.

[0090] The plug continues to move to the right, until it reaches... Figure 10 When in the correct position, the plug and socket are completely separated.

[0091] In this embodiment of the invention, both the plug 2 and the socket 1 are circular structures and are provided with flange panels for installation.

[0092] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A quick-plug structure, comprising a plug and a socket for interlocking at their front ends, wherein the plug housing has at least one pin mounting hole for assembling a pin contact, and the socket housing has at least one socket mounting hole for assembling a socket, characterized in that: The front end of the pin mounting hole has a cavity for the insertion of the socket mounting hole; the pin contact includes a front pin capable of axial reciprocating relative to the plug housing, and an elastic element is connected to the tail of the front pin; the front pin is also provided with a moving part capable of radial reciprocating; when the plug and socket are inserted, the end face of the socket mounting hole blocks and limits the moving part, compressing the elastic element; when the moving part is radially squeezed by the plug housing and the front end of the socket mounting hole, it enters the release groove on the side wall of the socket mounting hole and moves axially with the front pin under the push of the elastic element, realizing the rapid insertion of the front pin and the socket; when the plug and socket are separated, the front end of the release groove blocks and limits the moving part, the elastic element is stretched, and the front pin and the socket remain in contact; when the moving part is radially squeezed by the plug housing and the side wall of the release groove, it disengages from the release groove, and the front pin is quickly separated from the socket under the pull of the elastic element; The front end of the insertion hole is provided with a first inclined surface, which is used to stop and limit the moving part so that the elastic element is compressed and the moving part is guided into the release groove; the front side wall of the release groove is provided with a second inclined surface, which is used to stop and limit the moving part so that the elastic element is stretched and the moving part is guided out of the release groove. The pin mounting hole is also provided with a clearance groove for avoiding the moving parts; the rear wall of the clearance groove is provided with a first guide surface and the front wall is provided with a second guide surface, wherein the first guide surface is an inclined surface for radially pressing the moving parts to enter the release groove, and the second guide surface is an inclined surface for radially pressing the moving parts to disengage from the release groove; the moving parts include a guide mounting groove and a slider slidably mounted in the guide mounting groove, a spring provides the slider with power to move away from the bottom of the guide mounting groove, and a roller is rotatably provided at the upper end of the slider.

2. The quick-plug structure according to claim 1, characterized in that: The front-end pin includes a pin body and a high-temperature resistant contact fixed to the front end of the pin body. When the moving part is stopped and limited by the front wall of the release groove, the high-temperature resistant contact makes contact with the socket and conducts electricity. When the plug and socket are plugged in, the pin body makes contact with the socket and conducts electricity.

3. The quick-plug structure according to claim 1, characterized in that: The front end of the socket is provided with an elastic structure, which achieves reliable contact with the front end pin through the contact protrusion inside the elastic structure.

4. The quick-plug structure according to claim 2, characterized in that: The high-temperature resistant contact is also fixed with a non-conductive contact for isolating electric arcs.

5. The quick-plug structure according to claim 1, characterized in that: The pin contact also includes a connecting part fixed in the pin mounting hole and a tail terminal fixed at the rear end of the connecting part. The connecting part maintains sliding contact with the front pin, and the elastic element is located between the tail terminal and the front pin.

6. The quick-plug structure according to claim 5, characterized in that: The connecting part is sleeved on the front end pin. The connecting part includes a small diameter section for sliding contact with the front end pin, a large diameter section for fixed cooperation with the plug housing, and a stepped surface for connecting the two. The front end pin achieves axial forward sliding limit by cooperating with the stepped surface through its outer peripheral boss, and achieves axial backward sliding limit by cooperating with the tail end face and the tail terminal.

7. The quick-plug structure according to claim 1, characterized in that: The roller is rotatably mounted in a slot at the upper end of the slider via a fixed shaft, and partially extends out of the slot; the upper surface of the slider is an arc surface that is low at both ends and high in the middle.

Images